NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1473 - 1477 of 2184

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Question number: 1473

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

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MCQ▾

Question

A system is given 200 calories of heat and it does 600 joules of work. The internal energy of the system change in this process is (J = 4.18 Joule/cal)

Choices

Choice (4) Response

a.

-300 Joule

b.

236 Joule

c.

236.5 Joule

d.

- 236 Joule

Question number: 1474

» Atoms and Nuclei » Nuclear Fission and Fusion

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MCQ▾

Question

Which of the following are not examples of nuclear fusion?

(1) Formation of Ba and Kr from U 235

(2) Formation of Pu 235 from Th 235

(3) Formation of water from hydrogen and oxygen

(4) Formation of He from H

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

2 and 4 are correct

c.

1 and 2 are correct

d.

1,2 and 3 are correct

Question number: 1475

» Atoms and Nuclei » Composition and Size of Nucleus

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MCQ▾

Question

How many electrons, protons and neutrons are there in a 6 gm of 6 C 12?

Choices

Choice (4) Response

a.

36 × 1023,36 × 1023,36 × 1023

b.

18 × 1023,18 × 1023,18 × 1023

c.

12 × 1023,12 × 1023,12 × 1023

d.

6 × 1023,6 × 1023,6 × 1023

Question number: 1476

» Atoms and Nuclei » Binding Energy Per Nucleon

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MCQ▾

Question

If the binding energy of deuterium is 2.23 MeV, then the mass defect will be- (in a. m. u. )

Choices

Choice (4) Response

a.

0.0024

b.

- 0.0012

c.

-0.0024

d.

0.0012

Question number: 1477

» Thermodynamics » Thermal Equilibrium

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MCQ▾

Question

In the diagrams (i) to (iv) of variation of volume with changing pressure is shown. A gas is taken along the path ABCD. The change in internal energy of the gas will be

graphs of volume vs pressure various patterns formed

Graphs of Volume vs Pressure Various Patterns Formed

In above figure we shows the four different, volume vs pressure graph.

Choices

Choice (4) Response

a.

Positive in cases (i), (ii) and (iii) but zero in case (rv)

b.

Negative in cases (i), (ii) and (iii) but zero in case (iv)

c.

Positive in all cases (i) to (iv)

d.

Zero in all cases